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Suvendu Kumar Dash 
M.Tech In ECE 
VTP1429 
Suvendu.15292@gmail.com
Overview 
 About the Samsung Galaxy S II 
 Specification Of Samsung Galaxy S II 
 Microcontroller used in the Samsung Galaxy S II 
 Details of the Core 
 Memory organization 
 Various types of memory, hardware features 
 Size and features 
 Architecture of GPU. 
 Touch screen sensor 
 OS details 
 Reference 
10/28/2014 suvendu.15292@gmail.com
About The Samsung Galaxy S II 
 The Samsung Galaxy S 
II is a touchscreen 
enabled Android based 
smartphone designed, 
developed, and 
marketed by Samsung 
Electronics. 
 Samsung unveiled the S 
II on 13 February 2011 
at the Mobile World 
Congress. 
10/28/2014 suvendu.15292@gmail.com
Specification Of Samsung Galaxy S II 
Key Features 
 Android v2.3 (Gingerbread) OS 
 4.27-inch Super AMOLED Plus Touchscreen 
 GPU is PowerVR SGX540 
 8 MP Primary Camera 
 2 MP Secondary Camera 
 1.2 GHz Dual Core ARM Cortex A9 Processor 
 Expandable Storage Capacity of 64 GB 
10/28/2014 suvendu.15292@gmail.com
Microcontroller used in the Samsung Galaxy S II 
 Samsung Galaxy S II is based on the ARM Cortex A9. 
 ARM Cortex A9 uses the ARM v7 ISA. 
 Cortex A9 is 800 MHz dual-core processor supporting symmetric and 
asymmetric multiprocessing. 
 High-efficiency, dual-issue superscalar pipeline (2.5 MIPS* per MHz) 
 NEON media processing engine for media and signal processing 
acceleration 
 32 KB instruction and 32 KB data caches. 
 Memory Management Unit with TrustZone security technology 
 Thumb-2 technology for enhanced code density, performance, and 
power efficiency. 
 Jazelle architecture extensions for accelerating Java Virtual Machine. 
10/28/2014 suvendu.15292@gmail.com
Detail Of The Core Cont.. 
Cortex-A9 Dual core processor 
10/28/2014 suvendu.15292@gmail.com
NEON Media Process Engine (MPE) 
 128-bit SIMD (single 
instruction multiple data) 
 Accelerate multimedia and 
signal processing algorithms 
 video, 2D/3D graphic, audio 
and speech processing 
 has 32 registers (vectors of 
elements), 64-bits wide 
 data type: signed/unsigned 8- 
bit, 32-bit, 64-bit, and single 
precision floating point. 
10/28/2014 suvendu.15292@gmail.com
Floating Point Unit (FPU) 
 High-performance single, 
and double precision 
floating point instructions 
 Double the performance of 
previous ARM floating 
point units 
 Capable significant 
enhancing solution with 
rich graphic, 3D, imaging 
and scientific computation 
10/28/2014 suvendu.15292@gmail.com
Program Trace Macrocell (PTM) 
 A Program Trace Macrocell (PTM) 
is a real-time trace module 
providing instruction tracing of a 
processor. 
 A PTM is an integral part of an ARM 
Real View debug solution. 
 Outputs information that helps you 
to understand the operation of the 
processor. 
 The trace protocol provides a real-time 
trace capability for processors 
that are deeply embedded in much 
larger ASIC designs. 
10/28/2014 suvendu.15292@gmail.com
Snoop Control Unit 
 The Snoop Control Unit 
(SCU) maintains 
coherency between L1 
data caches 
 Duplicated Tag RAMs 
keep track of what data 
is allocated in each 
CPU’s cache 
 Separate interfaces into 
L1 data caches for 
coherency maintenance. 
10/28/2014 suvendu.15292@gmail.com
Memory Organization 
 Samsung Galexy S II have 16 GB Internal Memory. 
 It have 1 GB RAM. 
 For the External Storage is based on the microSD 
card, which is expandable up to 64 GB. 
 Samsung Galexy S ll memory Technology is 
LPDDR2. 
10/28/2014 suvendu.15292@gmail.com
Memory Organization 
LPDDR stands for Low Power double data 
rate synchronous DRAM. 
LPDDR2 Features: 
 Double Data Rate Architecture: 2 data Transfers per clock 
Cycle. 
 LPDDR2 memory delivers 400-533MHz speed, equal to 
1,066 Mbps in 1.2V. 
 LPDDR2 offers bandwidth up to 8.5 GB per second, 
which is more than twice as fast as Mobile LPDDR1. 
 LPDDR2 is designed to deliver significant power savings 
compared to the previous-generation LPDDR1. 
10/28/2014 suvendu.15292@gmail.com
PowerVR SGX540 GPU. 
 PowerVR is a division of Imagination Technologies (formerly 
VideoLogic) that develops hardware and software for 2D 
and 3D rendering, and for video encoding, decoding, 
associated image processing and DirectX, OpenGL 
ES, OpenVG, and OpenCL acceleration. 
 PowerVR SGX540 Release in Nov 2007. 
 PowerVR SGX540 Bus Width is 32-128bit. 
 PowerVR SGX540 Frequency is 200MHz. 
 PowerVR SGX540 Supporting OpenGL ES 2.0 
and DirectX 10.1 with Shader Model 4.1. 
10/28/2014 suvendu.15292@gmail.com
Samsung Galexy S ll Touch Screen 
 Samsung Galexy S ll have Super AMOLED Plus capacitive 
touchscreen. 
 AMOLED (active-matrix organic light-emitting diode) is a 
display technology for use in mobile devices and televisions. 
 OLED describes a specific type of thin-film-display technology 
in which organic compounds from electroluminescent material 
and active matrix refers to the technology behind the 
addressing of pixels . 
10/28/2014 suvendu.15292@gmail.com
Samsung Galexy S ll Touch Screen Cont.. 
10/28/2014 suvendu.15292@gmail.com
Samsung Galexy S ll Touch Screen Cont.. 
 In comparison to AMOLED and Super AMOLED 
displays, the Super AMOLED Plus displays are even 
more energy efficient and brighter. 
 Resolution is 800×480. 
10/28/2014 suvendu.15292@gmail.com
Android OS v2.3.4 (Gingerbread) 
 On December 6, 2010, the Android 2.3 (Gingerbread) SDK 
was released, based on Linux kernel 2.6.35. 
 Android 2.3 (Gingerbread) over come Android 2.2 (Froyo, 
short for frozen yogurt) with new feature. 
 Android 2.2 (Froyo, short for frozen yogurt) is based on 
Linux kernel 2.6.32. 
10/28/2014 suvendu.15292@gmail.com
Android OS v2.3.4 (Gingerbread) 
New Features Of Android OS v2.3.4 (Gingerbread): 
 Updated user interface design with increased simplicity and speed 
 Support for extra-large screen sizes and resolutions (WXGAand higher) 
 Native support for SIP, VoIP internet telephony 
 Audio, graphical, and input enhancements for game developers 
 Concurrent garbage collection for increased performance 
 Native support for more sensors (such as gyroscopes and barometers) 
 Support for voice or video chat using Google Talk. 
 Open Accessory Library support 
 Fixed Bluetooth bug on Samsung Galaxy S. 
 Improved Gmail application. 
 Camera software enhancements. 
 Improved battery efficiency. 
 Fixed a voice search bug. 
10/28/2014 suvendu.15292@gmail.com
Reference 
 http://www.arm.com/files/pdf/armcortexa-9processors.pdf 
 http://arm.com/markets/mobile/samsung-galaxy-s-ii.php 
 http://www.samsung.com/global/microsite/galaxys2/html/ 
feature.html 
 http://www.atmel.com/about/news/release.aspx?reference 
=tcm:26-35026 
 http://www.altera.com/devices/processor/arm/cortex-a9/ 
m-arm-cortex-a9.html 
 http://infocenter.arm.com/help/topic/com.arm.doc.ddi0407 
g/DDI0407G_cortex_a9_mpcore_r3p0_trm.pdf 
10/28/2014 suvendu.15292@gmail.com
Thank You 
10/28/2014 suvendu.15292@gmail.com

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The Architecture Of The Samsung Galaxy S II

  • 1. Suvendu Kumar Dash M.Tech In ECE VTP1429 Suvendu.15292@gmail.com
  • 2. Overview  About the Samsung Galaxy S II  Specification Of Samsung Galaxy S II  Microcontroller used in the Samsung Galaxy S II  Details of the Core  Memory organization  Various types of memory, hardware features  Size and features  Architecture of GPU.  Touch screen sensor  OS details  Reference 10/28/2014 suvendu.15292@gmail.com
  • 3. About The Samsung Galaxy S II  The Samsung Galaxy S II is a touchscreen enabled Android based smartphone designed, developed, and marketed by Samsung Electronics.  Samsung unveiled the S II on 13 February 2011 at the Mobile World Congress. 10/28/2014 suvendu.15292@gmail.com
  • 4. Specification Of Samsung Galaxy S II Key Features  Android v2.3 (Gingerbread) OS  4.27-inch Super AMOLED Plus Touchscreen  GPU is PowerVR SGX540  8 MP Primary Camera  2 MP Secondary Camera  1.2 GHz Dual Core ARM Cortex A9 Processor  Expandable Storage Capacity of 64 GB 10/28/2014 suvendu.15292@gmail.com
  • 5. Microcontroller used in the Samsung Galaxy S II  Samsung Galaxy S II is based on the ARM Cortex A9.  ARM Cortex A9 uses the ARM v7 ISA.  Cortex A9 is 800 MHz dual-core processor supporting symmetric and asymmetric multiprocessing.  High-efficiency, dual-issue superscalar pipeline (2.5 MIPS* per MHz)  NEON media processing engine for media and signal processing acceleration  32 KB instruction and 32 KB data caches.  Memory Management Unit with TrustZone security technology  Thumb-2 technology for enhanced code density, performance, and power efficiency.  Jazelle architecture extensions for accelerating Java Virtual Machine. 10/28/2014 suvendu.15292@gmail.com
  • 6. Detail Of The Core Cont.. Cortex-A9 Dual core processor 10/28/2014 suvendu.15292@gmail.com
  • 7. NEON Media Process Engine (MPE)  128-bit SIMD (single instruction multiple data)  Accelerate multimedia and signal processing algorithms  video, 2D/3D graphic, audio and speech processing  has 32 registers (vectors of elements), 64-bits wide  data type: signed/unsigned 8- bit, 32-bit, 64-bit, and single precision floating point. 10/28/2014 suvendu.15292@gmail.com
  • 8. Floating Point Unit (FPU)  High-performance single, and double precision floating point instructions  Double the performance of previous ARM floating point units  Capable significant enhancing solution with rich graphic, 3D, imaging and scientific computation 10/28/2014 suvendu.15292@gmail.com
  • 9. Program Trace Macrocell (PTM)  A Program Trace Macrocell (PTM) is a real-time trace module providing instruction tracing of a processor.  A PTM is an integral part of an ARM Real View debug solution.  Outputs information that helps you to understand the operation of the processor.  The trace protocol provides a real-time trace capability for processors that are deeply embedded in much larger ASIC designs. 10/28/2014 suvendu.15292@gmail.com
  • 10. Snoop Control Unit  The Snoop Control Unit (SCU) maintains coherency between L1 data caches  Duplicated Tag RAMs keep track of what data is allocated in each CPU’s cache  Separate interfaces into L1 data caches for coherency maintenance. 10/28/2014 suvendu.15292@gmail.com
  • 11. Memory Organization  Samsung Galexy S II have 16 GB Internal Memory.  It have 1 GB RAM.  For the External Storage is based on the microSD card, which is expandable up to 64 GB.  Samsung Galexy S ll memory Technology is LPDDR2. 10/28/2014 suvendu.15292@gmail.com
  • 12. Memory Organization LPDDR stands for Low Power double data rate synchronous DRAM. LPDDR2 Features:  Double Data Rate Architecture: 2 data Transfers per clock Cycle.  LPDDR2 memory delivers 400-533MHz speed, equal to 1,066 Mbps in 1.2V.  LPDDR2 offers bandwidth up to 8.5 GB per second, which is more than twice as fast as Mobile LPDDR1.  LPDDR2 is designed to deliver significant power savings compared to the previous-generation LPDDR1. 10/28/2014 suvendu.15292@gmail.com
  • 13. PowerVR SGX540 GPU.  PowerVR is a division of Imagination Technologies (formerly VideoLogic) that develops hardware and software for 2D and 3D rendering, and for video encoding, decoding, associated image processing and DirectX, OpenGL ES, OpenVG, and OpenCL acceleration.  PowerVR SGX540 Release in Nov 2007.  PowerVR SGX540 Bus Width is 32-128bit.  PowerVR SGX540 Frequency is 200MHz.  PowerVR SGX540 Supporting OpenGL ES 2.0 and DirectX 10.1 with Shader Model 4.1. 10/28/2014 suvendu.15292@gmail.com
  • 14. Samsung Galexy S ll Touch Screen  Samsung Galexy S ll have Super AMOLED Plus capacitive touchscreen.  AMOLED (active-matrix organic light-emitting diode) is a display technology for use in mobile devices and televisions.  OLED describes a specific type of thin-film-display technology in which organic compounds from electroluminescent material and active matrix refers to the technology behind the addressing of pixels . 10/28/2014 suvendu.15292@gmail.com
  • 15. Samsung Galexy S ll Touch Screen Cont.. 10/28/2014 suvendu.15292@gmail.com
  • 16. Samsung Galexy S ll Touch Screen Cont..  In comparison to AMOLED and Super AMOLED displays, the Super AMOLED Plus displays are even more energy efficient and brighter.  Resolution is 800×480. 10/28/2014 suvendu.15292@gmail.com
  • 17. Android OS v2.3.4 (Gingerbread)  On December 6, 2010, the Android 2.3 (Gingerbread) SDK was released, based on Linux kernel 2.6.35.  Android 2.3 (Gingerbread) over come Android 2.2 (Froyo, short for frozen yogurt) with new feature.  Android 2.2 (Froyo, short for frozen yogurt) is based on Linux kernel 2.6.32. 10/28/2014 suvendu.15292@gmail.com
  • 18. Android OS v2.3.4 (Gingerbread) New Features Of Android OS v2.3.4 (Gingerbread):  Updated user interface design with increased simplicity and speed  Support for extra-large screen sizes and resolutions (WXGAand higher)  Native support for SIP, VoIP internet telephony  Audio, graphical, and input enhancements for game developers  Concurrent garbage collection for increased performance  Native support for more sensors (such as gyroscopes and barometers)  Support for voice or video chat using Google Talk.  Open Accessory Library support  Fixed Bluetooth bug on Samsung Galaxy S.  Improved Gmail application.  Camera software enhancements.  Improved battery efficiency.  Fixed a voice search bug. 10/28/2014 suvendu.15292@gmail.com
  • 19. Reference  http://www.arm.com/files/pdf/armcortexa-9processors.pdf  http://arm.com/markets/mobile/samsung-galaxy-s-ii.php  http://www.samsung.com/global/microsite/galaxys2/html/ feature.html  http://www.atmel.com/about/news/release.aspx?reference =tcm:26-35026  http://www.altera.com/devices/processor/arm/cortex-a9/ m-arm-cortex-a9.html  http://infocenter.arm.com/help/topic/com.arm.doc.ddi0407 g/DDI0407G_cortex_a9_mpcore_r3p0_trm.pdf 10/28/2014 suvendu.15292@gmail.com
  • 20. Thank You 10/28/2014 suvendu.15292@gmail.com